Geometry segment and angle definitions, postulates, and theorems

Front

Definition of complementary angles:

Back

Front

Which property states that if a = b, then a + c = b + c?

Back

Addition property of equality.

Front

According to the vertical angles theorem, vertical angles are:

Back

≅ (congruent).

Front

Back

Transitive property of congruence.

Front

Definition of perpendicular lines:

Back

Lines that form right angles.

Front

What is the sum of the interior angles of a triangle?

Back

180 degrees.

Front

Definition of supplementary angles:

Back

Front

What does the angle addition postulate state?

Back

Front

Definition of adjacent angles:

Back

Two angles that share a common side and vertex but do not overlap.

Front

What is the definition of vertical angles?

Back

Angles that are opposite each other when two lines intersect.